CN109467016B - Crane with a movable crane - Google Patents

Crane with a movable crane Download PDF

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Publication number
CN109467016B
CN109467016B CN201811628579.0A CN201811628579A CN109467016B CN 109467016 B CN109467016 B CN 109467016B CN 201811628579 A CN201811628579 A CN 201811628579A CN 109467016 B CN109467016 B CN 109467016B
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CN
China
Prior art keywords
arm
crane
main arm
auxiliary
main
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CN201811628579.0A
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Chinese (zh)
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CN109467016A (en
Inventor
谷思生
张平海
陈志灿
陈栋梁
王涛
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Xuzhou Heavy Machinery Co Ltd
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Xuzhou Heavy Machinery Co Ltd
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Priority to CN201811628579.0A priority Critical patent/CN109467016B/en
Publication of CN109467016A publication Critical patent/CN109467016A/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/64Jibs
    • B66C23/70Jibs constructed of sections adapted to be assembled to form jibs or various lengths

Abstract

The invention relates to a crane, comprising: a vehicle body; a main arm (1) rotatable to a position lying on a vehicle body; and the auxiliary arm (2) is connected with one end of the main arm (1) far away from the vehicle body and can be turned over to the upper part of the main arm (1) horizontally arranged on the vehicle body. By the aid of the technical scheme, the auxiliary boom of the crane can be overturned to the position above the main boom, the problem that the center of gravity of the auxiliary boom of the crane deviates from the center of the crane when the auxiliary boom is arranged on one side of the main boom in the prior art is solved, the problem of difficulty in operation of manually retracting and releasing the auxiliary boom on the side face is solved, the retracting and releasing efficiency of the auxiliary boom is improved, and the intelligent level and the competitiveness of the crane are improved.

Description

Crane with a movable crane
Technical Field
The invention relates to the field of engineering machinery, in particular to a crane.
Background
The conventional tire crane products are all provided with auxiliary arm devices, the auxiliary arm side of products below 200 tons is arranged at the right side of the main arm and transported together with the whole machine, and special transportation by a special transport plate vehicle is not needed; and 200 tons of products and above are limited by the width of the whole vehicle, and the placement of the auxiliary arm on the side can cause the whole vehicle to be ultra-wide and can only be placed on a special transport plate vehicle for transportation. When the auxiliary arm is used, the auxiliary arm can be disassembled and assembled only by assisting the hoisting of the crane, the efficiency is extremely low, and the cost is higher. Fig. 1 is a schematic top view showing a crane according to the related art, and as shown in fig. 1, a sub jib 2 and a main jib 1 of the crane are horizontally arranged side by side above a vehicle body.
In addition, in the side arrangement mode of the auxiliary jib of the medium and small tonnage crane, although the auxiliary crane is not needed for dismounting the auxiliary jib, the dismounting of the auxiliary jib can be completed only by manually dragging by an operator, the operation is laborious, particularly, the auxiliary jib is influenced by the self weight, the position of the main jib head connected with the auxiliary jib rotates, and the auxiliary jib is difficult to smoothly place at the side of the main jib after the use. And the side-arranged gravity center of the whole vehicle deviates to one side, the trafficability characteristic is poor in mountainous regions or other rugged places, and the use convenience and the product competitiveness of the product are influenced.
Disclosure of Invention
The invention aims to provide a crane, which solves the problem that the center of gravity of a crane deviates from the center of the crane when an auxiliary jib of the crane is arranged on one side of a main jib in the prior art.
According to an aspect of an embodiment of the present invention, there is provided a crane including:
a vehicle body;
the main arm can rotate to a position horizontally arranged on the vehicle body; and
and the auxiliary arm is connected with one end of the main arm, which is far away from the vehicle body, and can be turned over to the upper part of the main arm horizontally arranged on the vehicle body.
Optionally, the crane further comprises:
a first hinge unit for connecting the main arm and the sub arm and located at a lower portion of the sub arm which is horizontally placed on the vehicle body; and
and the overturning avoiding space is arranged between the main arm and the auxiliary arm and is used for avoiding the auxiliary arm which overturns relative to the main arm.
Optionally, the tumble escape space is gradually widened in an upward direction by the first hinge part.
Optionally, the crane further comprises a turning member between the main arm and the sub-arm, a lower end of a side of the turning member adjacent to the sub-arm being hinged to the sub-arm, and an upper end of a side of the turning member adjacent to the main arm being hinged to the main arm so that the turning member and the sub-arm are turned upward of the main arm.
Optionally, the crane further comprises a coupling member between the main arm and the upending member, the coupling member being detachably coupled to the main arm.
Optionally, an upper end of a side of the turning member adjacent to the connecting member is hinged to the connecting member, and a lower end of the side of the turning member adjacent to the connecting member is detachably connected to the connecting member.
Optionally, the crane further comprises a first driving part for driving the turning part to turn relative to the main arm.
Optionally, the connecting member is a frame structure, and the first driving part is provided in the frame structure.
Optionally, the crane further comprises a second drive for driving the jib to rotate about the first articulation member.
Optionally, the crane further comprises:
the first driving part is used for driving the auxiliary arm to rotate in a first angle range relative to the main arm; and/or
And the second driving part is used for driving the auxiliary arm to rotate in a second angle range relative to the main arm.
Optionally, the second driving part comprises a hoisting device, and the hoisting device is further used for driving a lifting hook of the crane to lift.
By the aid of the technical scheme, the auxiliary boom of the crane can be overturned to the position above the main boom, the problem that the center of gravity of the auxiliary boom of the crane deviates from the center of the crane when the auxiliary boom is arranged on one side of the main boom in the prior art is solved, the problem of difficulty in operation of manually retracting and releasing the auxiliary boom on the side face is solved, the retracting and releasing efficiency of the auxiliary boom is improved, and the intelligent level and the competitiveness of the crane are improved.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 shows a schematic construction of a crane of the related art;
FIG. 2 shows a schematic perspective view of a boom of a crane according to an embodiment of the present invention;
FIG. 3 shows a schematic structural view of a boom of a crane according to an embodiment of the present invention in a first state;
FIG. 4 shows a schematic structural view of the boom of the crane of the embodiment of the present invention in a second state;
FIG. 5 shows a schematic structural view of the boom of the crane of the embodiment of the present invention in a third state; and
fig. 6 shows a schematic structural diagram of the boom of the crane according to the embodiment of the invention in a fourth state.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 2 shows a schematic structural diagram of the boom of the crane of the embodiment. As shown in fig. 2, the crane of the present embodiment includes a vehicle body, a main arm 1 swingably mounted on the vehicle body in a vertical plane, and an auxiliary arm 2 connected to an end of the main arm 1 remote from the vehicle body. The auxiliary arm 2 can rotate to a position of being horizontally arranged on the vehicle body along with the main arm 1, and the auxiliary arm 2 can rotate relative to the main arm 1 and can turn over to the upper part of the main arm 1.
The main arm 1 is provided with a support 10 for carrying the sub-arm 2 turned over the main arm 1. Optionally, the bracket 10 is located at an end of the main arm 1 adjacent the vehicle body.
As shown in fig. 2 to 6, the crane of the present embodiment further includes a first hinge member 8 for connecting the main jib 1 and the sub-jib 2, the first hinge member 8 being located at a lower portion of the sub-jib 2 lying on the vehicle body.
An overturning avoiding space is further arranged between the main arm 1 and the auxiliary arm 2 and used for avoiding the auxiliary arm 2 rotating relative to the main arm 1. The turn-up avoiding space is gradually widened in the upward direction by the first hinge part 8.
The crane further comprises a rod-shaped member 9, which rod-shaped member 9 is located at an end of the turn-over avoidance space remote from the first articulated member 8. The first end of the rod-like member 9 is used for connecting the main arm 1, and the second end of the rod-like member 9 is used for connecting the sub-arm 2.
Optionally, the rod-like member 9 comprises a folding tab. In other embodiments, the rod-like member 9 is detachably connected between the main arm 1 and the sub-arm 2.
The crane further comprises a turning part 7 positioned between the main arm 1 and the auxiliary arm 1, wherein the lower end of one side of the turning part 7 adjacent to the auxiliary arm 2 is hinged with the auxiliary arm 2, and the upper end of one side of the turning part 7 adjacent to the main arm 1 is hinged with the main arm 1, so that the turning part 7 and the auxiliary arm 2 are turned over the main arm 1.
The crane further comprises a coupling element 3 between the main arm 1 and the overturning element 7, the coupling element 3 being removably coupled to the main arm in order to facilitate the disassembly and assembly of the secondary arm 2 as required.
As shown in fig. 6, the upper end of the side of the connecting member 3 adjacent to the turning member 7 is connected to the turning member 7 by a second hinge member 6. The lower end of the side of the connecting part 3 adjacent to the turning part 7 is detachably connected with the turning part 7, the lower end of the side of the connecting part 3 adjacent to the turning part 7 is connected with the turning part 7 during the operation of the crane, and when the turning part 7 rotates with the auxiliary arm, the lower end of the side of the connecting part 3 adjacent to the turning part 7 is separated from the turning part 7, so that the turning part 7 can rotate with the auxiliary arm 2 around the second hinge part 6.
The lower end of the side of the connecting member 3 adjacent to the turning member 7 is connected to the turning member 7 by a pin 5. The lower end of one side of the connecting part 3, which is adjacent to the overturning part 7, is provided with a first pin shaft hole 5a matched with the pin shaft 5, and the overturning part 7 is provided with a second pin shaft hole matched with the pin shaft 5.
The crane further comprises a first drive 4 for driving the turning part 7 in rotation around the second articulated part 6, the first drive 4 comprising a hydraulic cylinder. Alternatively, the connecting member 3 is a frame structure, and the first driving part 4 is provided in the frame structure.
The crane further comprises a second drive for driving the jib in rotation about the first articulation 8.
The second driving part comprises a hoisting device, and the hoisting device is also used for driving the lifting hook of the crane to lift.
As shown in fig. 4, the hoisting device includes a drum 11 and a rope body 12. One end of the rope body 12 is wound on the winding drum 11, and the other end is connected with the main arm 1. A pulley is arranged on the auxiliary arm 2, a rope body 12 extends from the winding drum 11 to the auxiliary arm 2, and the rope body 12 bypasses the pulley arranged on the auxiliary arm 2, extends to one end of the main arm 1 far away from the car body and is connected with the main arm 1.
In the present embodiment, the connecting member 3 is provided with a rope fixing portion 16, and one end of the rope 12 away from the drum 11 is connected to the rope fixing portion 16.
The secondary arm 2 comprises a first secondary arm 2a and a second secondary arm 2b articulated to the first secondary arm 2 a. The second sub-arm 2b is turnable to one side of the first sub-arm 2 a. The pulleys mentioned above comprise a first pulley 14 provided on the first sub-arm 2a and a second pulley 13 provided on the second sub-arm 2 b. The connecting member 3 is provided with a third pulley 15.
Fig. 3 to 6 are schematic diagrams showing the structures of the boom of the crane of the present embodiment in various states during the folding process.
After the crane has completed its work task, the main jib 1 and the sub-jib 2 are first rotated together to a position lying on the car body and the wire ropes used for the lifting work are removed, as shown in fig. 3.
If the second sub-arm 2b has been deployed during crane operation, the second sub-arm 2b has to be turned to the side of the first sub-arm 2 a. By placing the second secondary boom 2b sideways it is possible to achieve that the overall length of the crane is not too long and does not interfere with the following structures after the secondary boom 2 has been turned over above the main boom 1. The process selects an operation according to whether the second fly jib 2b is used or not, and the second fly jib 2b is not used in the crane operation work, which is omitted.
The rope body 12 reversely winds the first pulley 14 to be connected to the rope head fixing part 16, the auxiliary arm 2 is pulled to turn over at double multiplying power, the stress of the rope body 12 is reduced, and then the pin shaft of the folding pulling plate is pulled out, and the drawing is shown in figure 4.
Under the pulling force of the rope body 12 of the hoisting winch, the overturning part of the auxiliary arm 2 is rotated and upwards pulled along the first hinge part 8 until the pulling plate at the overturning part 7 is folded in place, and the overturning part 7 is fixed by detaching the lower pin shaft in the previous step, so that the overturning part 7 and the auxiliary arm 2 are overturned together, as shown in fig. 5. The pin 5 connecting the roll stand 7 and the connecting part 3 needs to be removed.
Under the combined action of the pulling force of the rope body 12 of the hoisting device and the first driving part 4, the auxiliary jib overturning part is rotated along the second hinge joint part 6 and is continuously pulled upwards until the auxiliary jib overturning part is placed on the bracket above the main jib, and the self-overturning of the auxiliary jib is completed. As shown in fig. 6. The whole process is realized by the self mechanism of the crane and the amplitude variation equipment.
The main process of the auxiliary arm which rapidly enters a hoisting state by self-overturning is as follows:
1. the sub-boom 2 is rotated along the second hinge member 6 by the contraction of the hydraulic cylinder of the first driving part 4 while paying out the rope body 12 until the state shown in fig. 5 is reached, the pin 5 for connecting the link member 3 and the reversing member 7 is mounted, and the pin for restraining the sub-boom 2 above the main boom 1 is removed.
2. And continuously releasing the steel wire rope until the overturning part is horizontal, penetrating a pin shaft used for limiting the auxiliary arm 2 above the main arm 1 into the folding pulling plate, and adjusting the angle of the auxiliary arm rotating frame pulling plate according to actual requirements, namely the folding pulling plate.
3. And (3) determining whether to turn the second auxiliary arm 2b to a working state according to working condition requirements, if so, turning the second auxiliary arm 2b and connecting the second auxiliary arm with the first auxiliary arm 2a, if not, detaching a steel wire rope from a rope head fixing point to be connected to a pulley at the head of one auxiliary arm, and entering a hoisting state.
According to the invention, by designing a set of amplitude variation device and related mechanisms for the auxiliary jib to automatically turn over and rapidly transition the auxiliary jib without using an auxiliary crane or a special transport plate trailer, the use efficiency is improved and the use cost is saved. In addition, the auxiliary arm is overturned for multiple times, so that the height limit and the overlong condition of the auxiliary arm which is not more than 4m are guaranteed, and the problem of transition of the long auxiliary arm along with a vehicle is solved.
In some embodiments, the jib tip-over may not use a jib luffing cylinder, and other auxiliary equipment such as an auxiliary crane, jacking mechanism, or other mechanical device capable of effecting tip-over may be used.
In some embodiments, the amplitude cylinder for overturning can also be arranged on the main arm, the main arm is lifted to a certain angle firstly, the head of the auxiliary arm is pulled by the lifting steel wire rope to amplitude backwards, when the main arm is moved to the vertical direction, the oil cylinder on the main arm is supported on the auxiliary arm structure in a full extension mode to prevent the auxiliary arm from suddenly dropping, and the auxiliary arm is overturned backwards and upwards by slowly shortening the oil cylinder.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A crane, comprising:
a vehicle body;
a main arm (1) rotatable to a position lying on a vehicle body; and
the auxiliary arm (2) is connected with one end of the main arm (1) far away from the vehicle body and can be turned over to the upper part of the main arm (1) horizontally arranged on the vehicle body,
a first hinge means (8) for connecting said primary arm (1) and said secondary arm (2) and located at the lower part of said secondary arm (2) lying on the vehicle body;
a turn-avoiding space provided between the main arm (1) and the sub-arm (2) for avoiding the sub-arm (2) turned relative to the main arm (1), the turn-avoiding space being gradually widened in an upward direction by the first hinge member (8); and
and a rod-shaped part (9) is positioned at one end of the overturning and avoiding space far away from the first hinge part (8), the first end of the rod-shaped part (9) is used for connecting the main arm (1), and the second end of the rod-shaped part (9) is used for connecting the auxiliary arm (2).
2. A crane as claimed in claim 1, further comprising a tilting member (7) between the main arm (1) and the secondary arm (2), the lower end of the tilting member (7) adjacent to the side of the secondary arm (2) being hinged to the secondary arm (2), the upper end of the tilting member (7) adjacent to the side of the main arm (1) being hinged to the main arm (1) so as to tilt the tilting member (7) and the secondary arm (2) upwards of the main arm (1).
3. A crane according to claim 2, further comprising a coupling member (3) between the main arm (1) and the overturning member (7), the coupling member (3) being removably coupled to the main arm (1).
4. A crane according to claim 3, characterized in that the upper end of the side of the turning member (7) adjacent to the connecting member (3) is hinged to the connecting member (3) and the lower end of the side of the turning member (7) adjacent to the connecting member (3) is detachably connected to the connecting member (3).
5. A crane as claimed in claim 3, further comprising a first drive (4) for driving the turning part (7) in rotation relative to the main arm.
6. A crane according to claim 5, characterized in that the connecting member (3) is a frame structure, the first drive (4) being provided in the frame structure.
7. A crane according to claim 1, further comprising a second drive for driving the fly jib (2) in rotation about the first hinge part (8).
8. The crane of claim 1, further comprising:
a first driving part (4) for driving the auxiliary arm (2) to rotate in a first angle range relative to the main arm (1); and/or
And the second driving part is used for driving the auxiliary arm (2) to rotate in a second angle range relative to the main arm (1).
9. The crane of claim 8, wherein the second driving part comprises a hoisting device, and the hoisting device is further used for driving a lifting hook of the crane to lift.
CN201811628579.0A 2018-12-29 2018-12-29 Crane with a movable crane Active CN109467016B (en)

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CN109467016B true CN109467016B (en) 2021-02-09

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110626963B (en) * 2019-08-23 2020-11-03 中联重科股份有限公司 Knuckle boom folding and unfolding device, crane and folding and unfolding method of knuckle boom folding and unfolding device

Citations (1)

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Publication number Priority date Publication date Assignee Title
CN102358580A (en) * 2011-08-12 2012-02-22 中联重科股份有限公司 Folding jib structure and method for unfolding and folding the same

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DE2351953C2 (en) * 1973-10-16 1983-10-20 Peiner Hebe- Und Transportsysteme Gmbh, 5500 Trier Tower crane with collapsible boom
CN202829373U (en) * 2012-06-12 2013-03-27 北京市三一重机有限公司 Jib and engineering machinery
JP6085493B2 (en) * 2013-02-15 2017-02-22 株式会社東京Bk足場 Tower crane
CN205892576U (en) * 2016-07-06 2017-01-18 徐州市久发工程机械有限责任公司 Fast set up tower crane's jib loading boom turns over a device
CN206872315U (en) * 2017-05-27 2018-01-12 徐州重型机械有限公司 Jib structure and crane
CN207108310U (en) * 2017-08-15 2018-03-16 徐州重型机械有限公司 Boom system and crane

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CN102358580A (en) * 2011-08-12 2012-02-22 中联重科股份有限公司 Folding jib structure and method for unfolding and folding the same

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